That '70s Show
S04E21 Prank Day
Kelso declares it Prank Day and successfully pulls off two clever tricks on his friends. The guys plan to get back at him, but their scheme goes awry when Red inadvertently sets off their prank. Instead of getting mad at Eric, Red decides to join the prank war, eager to teach the boys a lesson. Meanwhile, Jackie organizes a spontaneous sleepover to lift Donna’s spirits on the occasion of her parents' wedding anniversary.
Season 4 Episodes
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It's a Wonderful Life
Eric's Depression
Pinciotti vs. Forman
Hyde Gets a Girl
Bye-Bye Basement
The Relapse
Uncomfortable Ball Stuff
Donna's Story
The Forgotten Son
Red and Stacey
The Third Wheel
An Eric Forman Christmas
Jackie Says Cheese
Eric's Hot Cousin
Tornado Prom
Donna Dates a Kelso
Kelso's Career
Leo Loves Kitty
Jackie's Cheese Squeeze
Class Picture
Prank Day
Eric's Corvette Caper
Hyde's Birthday
That '70s Musical
Eric's False Alarm
Everybody Loves Casey
Love, Wisconsin Style